Classifying or sizing apparatus.



',PATENTED. 00T.

A. lTENV WINKEL. GLASSIPYING'OR sIzlNG APPARATUS.

APPLICATION FILED-AUG. 25, 1902.4

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TH: MORRIS PETERS co.. Priora-LITHO.. WASHINGTON, uA c,

UNITED STATES l ratented October 13, leo.

PATENT'v OEEICE.

AUGUST TEN WINKEL, oF'DENvER, COLORADO, ASSIGNOR, BY DIRECT AND MESNEASSIGNMENTS, oF ONE-HALE To STANLEY I-I. BISSELL, OE DENVER, COLORADO,DWIGHT EISSELL, OE REDWOOD FALLS, MINNESOTA, AND FLORENCE M. COTTON, OFMINNEAPOLIS, MINNESOTA.

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SPECIFICATION forming part of Letters Patent No. 741,565, dated October1.3, 1903. Application filed August 25, 1902. Serial No. 121,012. (Nomodel.) v

To @ZZ whom, it may concern.-

Beit known that I, AUGUST TEN WINKEL, a citizen of the United States ofAmerica, residing at Denver, in the county of Arapahoe and State ofColorado, have'invented certain new and useful Improvements inClassifying or Sizing Apparatus; and I do declare the following to be afull, clear, and exact description of the invention, such as will enableothers skilled in the art to which it appertaius to make and use thesame, reference being hadto the accompanying drawings, and to theletters and figures of reference marked thereon, which form a part ofthis specification.

Myinvention relates to improvements in sizingor classifying apparatusfor use in connection with concentrating-tables and it consists ofthefeatures, arrangements, and combinations hereinafter described andclaimed, all of which will be fully understood by reference to vtheaccompanying drawings, liu which is illustrated an embodiment thereof.In the drawings, Figure 1 is a top or plan view of the apparatus, one ofthe screens be-v ing partly broken away. Fig. 2 is a side elevation ofthe same viewed in the direction of the arrow in Fig. 1. Fig. 3 is asection taken on the line 3 3, Fig. l, the parts being shown 'on alarger scale. Fig. 4 is an end view looking in the direction of thearrow A in Fig. 1.

l Fig. 5 is a detail View of the screen shown on an lenlarged scale.

The same reference characters indicate the same parts in all the views.Let the numeral y5 designate a concentrating-table, which as shown inthe drawings is of the Wiliey type, being provided with 1ongitudinalrifles 5. Y

My improved apparatusis mounted at the feed-corner of the table andarranged to receive the pulp discharged from the feedboX 6. Thisapparatus will now be described in detail, though it must be understoodthat` the details of construction as set forth in the specication anddrawings may be varied without departing from the spirit of theinvention.

A bed-plate 7 is placed upon the riiiles 5a of '0, respectively, thesection A being finestsay' one hundred meshthe section B next infineness-say sixty mesh-f-and the section C fifty mesh. These sectionsall lie inthe same plane and are connected together by soldering orotherwise to form a smooth jointor union. The sections A, B, and O liein an inclined plane, the section A being uppermost, the section B nextbelow, and the section C lowest. The frame 12 consists of parallel sidestrips 12a aud-12c andend strips 12d'a`nd 12g. The side strips, as shownin the drawings, engage the linoleum 8 on opposite sides of the riftles9 that -is to say, the strip 12a is located above the uppermost riflieand the strip 12c below the lowermost riftle 9. In `this specificationit is assumed that the table 5 is laterally or transversely inclined,the edge Where the feed-box is located being. highest. This inclinationis not illustrated in the drawings. The part 12d of the frame engagesthe plate 7 at the head of the table, while the part 12g is of lessthickness, andthe riffles 9 are recessed or grooved to receive it. Thescreen-sections A, B, and C rest on the riflies 9. The Sections B and Care provided with projections 16 eX- tending above their upper surface.-On top of the screen-section A are located broken riftles orprojections 13, while near the lower edge of this screen is located acontinuous riiie 14. Above the parts 13 and 14. and resting thereon is ascreen-section D of coarser mesh than the section A beneath. For con-vvenience I will assume that this section D is eighty mesh. The section Dis also provided with projections l16 extending above the up'- persurface. The parts of the frame 12 adjacent the edges of the screen Dare thickened or built up to support the screen part D, as shown at 12h.

When the yapparatus is in use, the pulp from the feed-box 6 passes firstto the screensection D, through which the ore particles of eighty meshand finer pass to the screen-section A below. The eighty-mesh particlesbeing too coarse to pass through the onehundred-mesh screen, graduallywork down through the broken riftles or projections 13 to the continuousriflie 14, whence they work rearwardly or toward the left, referring toFigs. 1 and 2 of the drawings, being discharged from theone-hundred-mesh screen at a point E beyond the frame 12, while theparticles of one hundred mesh and finer will pass through the section Aand be discharged to the riflies 9 below and gradually work rearwardlyto the riilles of the table 5. It is assumed for the purposes of thisspecification that the table has a movement calculated to carry thematerial thereon from the right toward the left, referring to Figs. land 2 of the drawings. The material too coarse to pass through theeighty-mesh screen will move transversely downwardly to the section B ofsixty mesh. All the material of sixty mesh and finer will pass throughthe screen B to the riiiies 9 below and move gradually rearwardly to therifles of the table 5, while the particles coarser than sixty mesh willpass transversely downwardly to the screensection C. The particles offifty mesh and finer will pass through the screen-section C tothe riiies9 and move rearwardly along the rffles 9 to the table 5, While theparticles coarser than fifty mesh will pass over the lower bar of theframe 12 to the table 5 below my improved apparatus. Thus it will beseen that by virtue of my improvement the particles of ore are deliveredto the table 5 classified according to size, the finest particles beingdelivered to the upper part of the transversely-inclined table and theother grades to the lower portions of the table in the order of theirfineness, thus enabling the table to perform the concentrating functionmuch more efficiently than could be done without classification orsizing.

The projections 13 and 16 break up the pulp and separate the oreparticles, whereby a more accurate and efficient classification of saidparticles is obtained.

In Fig. 5 of the drawings is shown an enlarged view of the preferredform of screen fabric employed for all ofthe screen-sections. In thisconstruction the screen is passed through rollers or pressed fromopposite sides to cause the outer surface of the two sets of strands tooccupy the same plane. These strands are designated in Fig. 5 by thenumerals 3 and 4. This treatment of the screen increases its wearinglife, since it reduces to a minimum the resistance which it offers tothe movement of the ore particles thereon. This construction of screenis also more etlicient in performing the ore classifying or sizingfunction.

It will be observed from an inspection of the drawings that theprojections 16 of the screen-sections D, B, and C increase in number fora given surface area from the' upper portion of the apparatus downwardlytoward its lower discharge edge. This is because the agitation of theore particles should be increased as the ore works transverselydownwardly from the upper portion of the apparatus.

My'improved sizing apparatusis provided with an upwardly-projectingflange 17 ei-1-4 tending along the upper side and across a head endthereof.

Having thus described my invention, what I claim is- 1. A classifier orsizer comprising a shaking transversely -inclined riftled bed, providedwith screen sections varying in mesh, the finest-mesh section beingplaced uppermost on the bed, and the other sections below in the orderof their ineness, the coarsest section being lowermost, the saidscreen-sections being all located in the same inclined plane.

2. A classifier or sizer comprising a transversely-inclined riffled bed,provided with screen-sections varying in mesh, the iinest mesh sectionbeing placed uppermost on the bed and the other sections below in theorder of their neness, the coarsest section being lowermost, the saidsections being all located in the same inclined plane and provided withprojections applied to the upper surface of the finest section, and asection coarser than the finest section, but finer than the othersections lying inthe same plane with the finest section, the saidcoarser section being placed upon the said projections of the finestsection, and a riiile placed on the finest section below its projectionsto direct the material to the riifles beyond the screen, substantiallyas described.

3. A classifier or sizer comprising a transversely -inclined riffled bedprovided with screen-sections varying in mesh, the finestmesh sectionbeing placed uppermost on the bed and the other sections below in theorder of their tineness, the coarsest section being lowermost, thevarious screen-sections being provided with projections extending abovetheir upper surface.

4. The combination with a transversely-inclined table provided withlongitudinal riflies,

of a riffied bed applied to the feed-corner of the table and providedwith screen-sections of varying mesh, the finest-mesh section beinguppermost thereon, the other sections being arranged below in the orderof their fineness and in the same inclined plane, the coarsest sectionbeing lowermost, and all the sections being provided with projectionseX- tending above their upper surface.

5. The combination with a transversely-inclin ed table provided withlongitudinal riffies, of a riffled bed applied to the feed corner of thetable and provided withscreen-sectious of varying mesh, the finest-meshsection being uppermost thereon, the other sections being arranged belowin the order of their fineness and in the same inclined plane, the

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coarsest section being lowermost, all vthe sections being provided withprojections extending above their upper surface,and another section ofscreen coarser than the finest screen but finer than the other sectionsin the same plane as the nest section, the said coarser section beingplaced upon the projections of the finest section and'being itselfprovided with projections extending above its upper surface, and ariffle located on the finest section at the lower edge of the sectionabove for the purpose set forth.

6. A classifier and sizer comprising a riffled bed and a plurality ofsuperimposed screensections located thereon, the various sections beingprovided with projections extending above theirupper surface, and meansfor dis-` charging the various grades of ore particles from the sectionsat different points, substantially as described. 4 e

7. A classifier and sizer comprising a transverselyinclined riftled bed,provided with screen -sections varying in mesh, the nestmesh sectionbeing placed uppermost on the bed and the other sections below in theorder 25 of their ineness, the coarsest section being lowermost, thescreen fabric of the sections being pressed to cause the outer surfaceof the crossed strands, to lie in the-same plane, sub stantially asdescribed.

8. A classifier or sizer comprising a transverselyinclined bed providedwith screensections Varying in mesh, the finest-mesh section beingplaced uppermost on the bed and

